Over the last decade, documented recreational water illness (RWI) outbreaks have been increasing, according to the Centers for Disease Control & Prevention (CDC). The agency documented a record number of RWI outbreaks in the 2001/2002 biannual report (MMWR Oct 22, 2004). Although perhaps attributable to more outbreaks and better reporting, the ideal to which we aspire is a decrease in outbreaks, period -- despite those factors.